JustAnswer > HVAC
Ask A Question|Register|Login|Help
JustAnswer

HVAC
Ask a HVAC Question, Get an Answer ASAP!

Have your own HVAC question?

HVAC Technicians are Online Now
characters left:
Not a HVAC Question?

Related Hvac Topics:

  • Add
    • ,
  • Gas
    • ,
  • Hot
    • ,
  • Run
    • ,
  • Cool
    • ,
  • Heat
    • ,
  • Long
    • ,
  • Pump
    • ,
  • Work
    • ,
  • Check
Bookmark and Share

Question

I have a Ferroli combi boiler. The entire system is about 7 years old. Radiators get hot whilst gas is being burned and the pump is circulating but cool rapidly from the bottom whilst the pump is inoperative. Is this likely to be the result of sludge in the system and, if so, how do I tremove it? Will draining down and refilling the system work?

Submitted: 320 days and 7 hours ago.
Category: HVAC
Value: $18
Status: CLOSED

Accepted Answer

Hi

 

The pump should have an over run , ie will continue to circulate even if the boiler is not firing as long as the programmer is on constant or timed and calling. Check the pump is still running when the burner drops out.

 

Rads do cool from the bottom up as heat is convected upwards. You may well have alot of sludge . Add a proprietary c/h system cleaner in leave for the required and flush will remive any. Then add inhibitor to prevent the build up.

 

Hope this helps

 

alex

 

Picture
Expert: alex hewitt
Pos. Feedback: 100.0 %
Accepts: 
Answered: 1/6/2009

HVAC Technician

10 years UK based boiler repair and servicing. Registered gas operative in Uk

Related HVAC Questions

  • I HAVE TO PULL MY PROGRAMMABLE THERMOSTAT OFF THE WALL THEN
  • my hot air furnace seems to be burning too rich. How do I ad...
  • Hi, my thermostat has apperntly stopped working. I had it on
  • i have a laser 72 the control panel lights up but does nothi...
  • My gas furnace heats the downstair very well, but the upstai...
  • Ihave a DC90 that suddenly stopped only the blower fan and
  • I have a Goodman Gas fired, forced air heater Model GMS 9045...
  • I've got a Magic Chef furance/blower from the early '80s. Wh...



Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.
Question List | Become an Expert | Terms of Service | Security & Privacy | About Us
© 2003-2009 JustAnswer Corp.